Kalamax, the Stormsire + Refuse // Cooperate Combo

Kalamax on the battlefield (Kalamax tapped on the battlefield).

Refuse // Cooperate in your graveyard.

You have an additional castable sorcery.

plus the cost of the additional sorcery available

Cast any sorcery by paying its mana cost.

Holding priority, cast Cooperate by paying its mana cost.

Kalamax's first and second abilities trigger.

Resolve the first ability, creating a copy of Cooperate and choosing to copy the original Cooperate.

Resolve the second ability, putting a +1/+1 counter on Kalamax.

Resolve the Cooperate copy, creating a copy of Cooperate.

Kalamax's second ability triggers, putting a +1/+1 counter on itself.

Repeat from step 6 any number of times.

Infinite +1/+1 counters on a creature

Infinite magecraft triggers